javascript - window.onbeforeunload 功能

Question

当用户在重定向之前点击确定按钮时如何调用删除函数然后继续重定向

 $(document).ready({
window.onbeforeunload = confirmExit ;

 });

  function confirmExit()
 {
  var ele = document.getElementById ("localchanges") ;
 if (ele.value == "1")
   return "Changes are not saved. Discard changes?" ;
 }



function delete()
{

} 

Answer 1

$(document).ready({
window.onbeforeunload = confirmExit ;

 });

  function confirmExit()
 {
 delete()// call delete function here , once this is done , below codes will be executed
  var ele = document.getElementById ("localchanges") ;
 if (ele.value == "1")
   return "Changes are not saved. Discard changes?" ;
 }



function delete()
{

}